Make sure you always read the description for each song. I have explained which games are compatible.

Example:

21-key = For Where Winds Meet

22-key = For Heartopia

The 21/22-key macros can be used in both games because they have the same layout.

It can even be used in other games such as Once Human and Genshin Impact.

36-key = Only for Where Winds Meet

37-key = Only for Heartopia

The 36-key and 37-key have different layouts, so make sure you buy the one that matches the game layout (I usually include this at the end of the song title).

Specifically, the Sky Cotl sheet can be used in any game as long as the button layout has 15-keys (a video on how to use it is below).

This method can only be used on a PC. I don't know how to use this sheet on a mobile device yet.